They supplied me with a perfect set of heads to bring my 1999 Ford Ranger back to life. Ranger Frank has been in the family since the day he rolled off the showroom floor. Its great to have him back on the road.
I got my cylinder head quicker than expected. I would buy from this company again
Product was as described and packaged well! Communication throughout prosses was also great! I will definitely be using them in the future with other projects.
Replacement heads for my 3.5 EcoBoost worked perfect. The kit had everything I needed. The customer service was excellent. Highly recommend this company.
Remanufactured Honda R18 Civic 1.8L Cylinder Head Casting # RNA
Please verify your casting number is RNA before purchasing. Includes valves and springs only.
$775.00
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Additional Info
Remanufactured Honda Civic 1.8L R18A1 Cylinder Head Casting # RNA (2006–2011)
Premium OEM Replacement Cylinder Head For Honda 1.8L R18 Engines
This remanufactured Honda Civic 1.8L R18A1 SOHC cylinder head is precision-machined to restore original factory performance and fuel efficiency. Specifically designed for 2006–2011 models, this head features integrated VTEC (VVTi) technology to ensure a direct fit and long-lasting durability. Each unit is thoroughly inspected and refurbished to meet or exceed OEM specifications for reliable daily operation.
🛠️ In-House Machining Process
- Cleaning: Fully disassembled and thermally cleaned.
- Soda Blasted: Castings are blasted with Sodium Bicarbonate. Because baking soda is water-soluble, there is zero risk of abrasive media clogging oil passages.
- Pressure Testing: Tested to 60 PSI to ensure no cracks or porosity leaks.
- Surfacing: All heads are resurfaced on our Rottler S85A for a precision gasket-sealing surface.
- Valve Job: Multi-angle valve job performed; every port is Vacuum Tested to ensure valves are seated 100% airtight.
📊 Technical Specifications
- Engine Size: 1.8L
- Engine Code: R18A1
- Casting Number: RNA
- Configuration: SOHC (Single Over Head Cam) 4-Cylinder
- Condition: Remanufactured
- Technology: VTEC / VVTi Equipped
- Included Components: Valves and springs (Head Gasket and Bolts not included)
- Interchangeable Part Numbers:
- 10003-RNA-A00 ASSM
- 10003-RNA-A01 ASSM
- Core Return Required
🚛 Fitment Data
Common Applications:
- Honda Civic: 2006–2011 Honda Civic (1.8L)
[+] Click to View Full Detailed Fitment List
2007 Honda Civic 1.8L
2008 Honda Civic 1.8L
2009 Honda Civic 1.8L
2010 Honda Civic 1.8L
2011 Honda Civic 1.8L
📦 Core Return & Warranty
- Core Process: No upfront core fee. Receive your new heads and compare them to your originals before installation. Once complete, use the pre-paid return label included in your shipment. Cores must be returned within 30 days. Click here for Core Policy.
- Warranty: Includes a 2-Year Unlimited Mileage Warranty. Click here for Warranty details.
- Please Note: Parts, marine, and performance items carry specific warranty limitations — please review our full Warranty Policy for details.
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